Public Health Assessment Public Comment Release
Also in the main yard is a burnoff oven (similar to an incinerator), which was installed in 1973
Before 1972, surface water runoff flowed overland to intermittent streams west and south of the
facility. In 1972, two unlined lagoons were built in a fenced area immediately west of the main
yard of the site for stormwater retention. A National Pollutant Discharge Elimination System
(NPDES) permitted stormwater treatment plant and curbs to direct all stormwater runoff from
the facility to the lagoons were installed in 1979. This treatment plant removes PCBs from water
in the stormwater lagoon before releasing it to an unnamed stream that joins Little Brier Creek to
the west and eventually flows into Lake Crabtree about 2 miles west and south of the site. The
site is in compliance with its NPDES permit requirements.
PCBs have been measured in sediments and surface water in and around the creek more than a
mile downstream of the site. The nearest downstream residences are approximately 1 mile
downstream of the site; the residences appear to be at a higher elevation than the creek.
to flow toward the creeks. The only drinking water use
identified near the site was at a business located immediately north of the site. Employees of this
business used an onsite drinking water well until 1995. The facility has been connected to the
municipal water supply since April 1995.
The data used in this evaluation came from the following sources:
C Sampling of soil, sediment, and incinerator ash as part of the 1998 Expanded Site Inspection
(ESI) performed by the North Carolina Department of Environment and Natural Resources
(NCDENR) . The ESI Report also presented results of soil and sediment sampling from
past investigations, including the 1995 Site Inspection by the North Carolina Superfund
Section, a 1993 Removal Investigation by the U.S. Environmental Protection Agency (EPA),
and sampling in the late 1970s by the EPA.
of soil, sediment, surface water, groundwater, and fish
of the 2003 remedial
investigation by EPA. EPA's contractor provided the data through the Remedial Investigation
and Risk Assessment report revised in May 2004 .
The conclusions reached in this document are based on the data available at the time and might
be modified on the basis of results of additional samples collected in the future.
ATSDR staff (Jill Dyken, Shan-Ching Tsai, Ruby Palmer, and Benjamin Moore) visited the site
in March 2003. A walk-through to observe the main features of the site was conducted with EPA
representatives (Luis Flores and Diane Barrett) and EPA contractors. The team observed the